Old road frames with a braze-on derailleur mount were designed for large road rings. They aren't compatible with sub-compact chainrings
With an integrated chain stabilizer mechanism, the Shimano GRX derailleur provides a quieter experience along with shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features and ON/OFF switch for the chain stab
REAR DERAILLEUR, RD-R7100, 105, 12-SPEED, TOP NORMAL, SHADOW DESIGN, DIRECT ATTACHMENT
UPC: 192790819013
PRODUCT CODE: IRDR7100
ITEM NUMBER: RD-R7100
Quick release downtube cable housing stops allow you to easily lubricate shift housing without unbolting them from the frame.
The RoadLinkâ„¢ derailleur hanger extension is a unique patented device that offsets the position of your road derailleur to make it possible to run a wide-range mountain bike style cassette.
REAR DERAILLEUR, RD-M6000, DEORE, SGS 10SPEED, SHADOW PLUS DESIGN, DIRECT ATTACHMENT(DIRECT MOUNT COMPATIBLE)
UPC: 689228413252
PRODUCT CODE: IRDM6000SGS
ITEM NUMBER: RD-M6000
Replacement Push-Down Spring for Surly Singleator. Part number DP1003